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BLUE-FLAME VENT-FREE
NATURAL GAS HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
®
Models: CGN20, CGN20L, and RN30D
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury, or loss
of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of
this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
— Installation and service must be performed by
a qualified installer, service agency, or the gas
supplier.
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not
prohibited by state or local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer. (I.E. Installation of this
product is permitted after the manufactured (mobile) home is sited)
This appliance is only for use with the type of gas indicated on the rating plate.
This appliance is not convertible for use with other gases.
RN30D
Save this manual for future reference.
CGN20
CGN20L
WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manual for correct installation
and operational procedures. For
assistance or additional informa-
tion consult a qualified installer,
service agency, or the gas sup-
plier.
WARNING: This is an unvented
gas-fired heater. It uses air (oxy-
gen) from the room in which it is
installed. Provisions for adequate
combustion and ventilation air
must be provided. Refer to Air for
Combustion and Ventilation sec-
tion on page 3 of this manual.
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Related Manuals for Desa CGN20
Summary of Contents for Desa CGN20
- Page 1 NATURAL GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL RN30D ® Models: CGN20, CGN20L, and RN30D WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life.
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Page 2: Safety Information
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS SAFETY INFORMATION WARNINGS WARNING ICON G 001 IMPORTANT: Read this Owner’s Manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can... -
Page 3: Product Identification
103568 Ignitor Button Control Knob Grill Guard Heat Shield (RN30D) or Glass Panel (CGN20[L]) Heater Cabinet Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances. -
Page 4: Air For Combustion
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. - Page 5 AIR FOR COMBUSTION AND VENTILATION Continued Ventilation Grills into Adjoining Remove Room, Door into Option 1 Adjoining Room, Option 3 Figure 2 - Ventilation Air from Inside Building Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two per- manent openings: one within 12"...
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Page 6: Installing To Wall
4. If you can, provide greater clear- ances from floor, ceiling, and join- ing wall. You can locate model CGN20 and CGN20L on the floor, away from a wall. An optional floor mounting stand is needed. Purchase the floor mounting stand from your dealer. - Page 7 Grill guard will slide up about 1/4". 3. Pull bottom of front panel forward, then down. 4. Remove cardboard packing from grill and glass (CGN20[L]) or heat shield (RN30D). Figure 6 - Removing Front Panel Of Heater Methods For Attaching Mounting Bracket To Wall Only use last hole on each end of mounting bracket to attach bracket to wall.
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Page 8: Connecting To Gas Supply
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS INSTALLING TO WALL Continued Placing Heater On Mounting Bracket 1. Locate two horizontal slots on back panel of heater. 2. Place heater onto mounting bracket. Slide horizontal slots onto stand-out tabs on mounting bracket. -
Page 9: Checking Gas Connections
CONNECTING TO GAS SUPPLY Continued Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in the pipe could result in clogged heater valves. CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas. -
Page 10: Operating Heater
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS OPERATING HEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. -
Page 11: Inspecting Burner
INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 17 shows a correct pilot flame pat- tern. Figure 18 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. -
Page 12: Troubleshooting
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no spark at ODS/pilot When ignitor button is pressed, there is... - Page 13 TROUBLESHOOTING OBSERVED PROBLEM Burner backfiring during combustion Yellow flame during burner combustion Slight smoke or odor during initial opera- tion Heater produces a whistling noise when burner is lit 103568 OWNER’S MANUAL Continued POSSIBLE CAUSE 1. Burner orifice is clogged or damaged 2.
- Page 14 BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS TROUBLESHOOTING IMPORTANT: Operating heater where im- purities in air exist may create odors. Clean- ing supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors.
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Page 15: Technical Service
TECHNICAL SERVICE You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Techni- cal Service Department at 1-800-323-5190. SERVICE HINTS When gas pressure is too low • pilot will not stay lit • burner will have delayed ignition •... -
Page 16: Illustrated Parts Breakdown
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS ILLUSTRATED PARTS BREAKDOWN RN30D 10-1 10-2 ODS/Pilot 103568... -
Page 17: Parts List
PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 15 of this manual. RN30D 10-1 10-2 103568 OWNER’S MANUAL PART NUMBER DESCRIPTION 098304-01 Screw, #10 x 3/8" 098345-01AC Front Panel 103476-02... - Page 18 BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS ILLUSTRATED PARTS BREAKDOWN CGN20 CGN20L 12-1 12-2 ODS/Pilot 103568...
- Page 19 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 15 of this manual. PART NUMBER DESCRIPTION 098304-01 Screw, #10 x 3/8" 098742-03 Front Panel (CGN20) 098742-19 Front Panel, Ivory (CGN20L) 103476-01 Grill Guard 101108-01 Grill Guard Clip 098533-04AA...
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Page 20: Replacement Parts
BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS REPLACEMENT PARTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement part(s), either contact your nearest Parts Central or call DESA International’s Tech-... - Page 21 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ 103568...
- Page 22 BLUE-FLAME CGN20, CGN20L AND RN30D VENT-FREE NATURAL GAS HEATERS NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________...
- Page 23 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ 103568...
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Page 24: Warranty Information
COMFORT GLOW VENT-FREE HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
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